Finding the Fourth Proportional to 8,338.74, 12,500.86 and 3,405.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,338.74 : 12,500.86 = 3,405.23 : x
2. Step 2: Convert to fraction form
   8,338.74/12,500.86 = 3,405.23/x
3. Step 3: Cross multiply
   8,338.74x = 12,500.86 × 3,405.23
4. Step 4: Simplify right side
   8,338.74x = 42,568,303.50
5. Step 5: Solve for x
   x = 42,568,303.50/8,338.74
6. Step 6: Final answer
   x = 5,104.88